Cyprodenate is a stimulant drug, developed by the French company Les Laboratoires Albert Rolland. Cyprodenate was used in the clinical practice to correct the tranquilizing action of benzodiazepine drugs. Upon administration, cyprodenate is hydrolyzed to produce dimethylethanolamine (deanol), which is a precursor of choline, and may enhance central acetylcholine formation.

PR-104 is a phosphate ester dinitrobenzamide mustard pre-prodrug that is rapidly hydrolyzed systemically to PR-104A, a bioreductive prodrug. PR-104A is in turn activated via reduction by NADPH:cytochrome P450 oxidoreductase and other one-electron reductases in hypoxic cells, and by aldo-keto reductase 1C3 (AKR1C3) independently of oxygen, to the corresponding hydroxylamine (PR-104H) and amine (PR-104M) metabolites. Subsequently, these reactive nitrogen mustards crosslink DNA and cause cytotoxicity in cells. PR-104 is known to have preclinical anti-tumor activity in human tumor xenograft models as mono-therapy and in combination with radiotherapy and chemotherapy. Thrombocytopenia, and to a lesser extent neutropenia, was the dose-limiting toxicity of weekly PR-104. Combination of PR-104 with docetaxel or gemcitabine caused dose-limiting and severe myelotoxicity in patients with advanced solid tumors. PR-104 had been in phase II clinical trial for the treatment of acute myeloid leukemia.

Pretamazium is thiazolium derivative patented by UK pharmaceutical company Wellcome Foundation Ltd. as antiphrastic compound, that active against parasitic nematodes.

Amustaline (S-303) is a quinacrine mustard compound with potential antineoplastic activity. Amustaline binds to, intercalates and crosslinks DNA and RNA. This agent is mainly used for ex vivo purposes, specifically for the inactivation of pathogens such as viruses, protozoa and bacteria in red blood cells (RBCs). When S-303 is added to red blood cells, the compound rapidly passes through membranes, including those of cells and viral envelopes, due to its amphipathic character, and intercalates into helical regions of the nucleic acids of pathogens and white blood cells. TERCEPTTMBlood System usingamustaline (S-303) and glutathione (GSH) was able to inactivate high levels of DENV and ZIKV in RBCs. S-303 system has been shown to effectively inactivate a broad spectrum of pathogens, while maintaining RBC quality.

Dopropidil is an antianginal calcium ion modulating agent, possessing intracellular calcium antagonist activity and anti-ischemic effects in several predictive animal models. Dopropidil had similar vasorelaxant potency as bepridil in the rabbit aorta depolarized by K(+), but was less potent than verapamil, nifedipine, and diltiazem in this respect. Dopropidil has an unusual pharmacological profile, which includes both antiarrhythmic and anti-atherosclerotic properties. In vitro studies show that dopropidil inhibits both smooth and cardiac muscle contractions induced by activation of voltage operated channels, and inhibits the “slow” inward calcium current in the latter tissue, suggesting that dopropidil blocks membrane calcium ion channels. Dopropidil-induced inhibition of collagen and thrombin-induced platelet aggregation at higher concentrations also suggests actions other than calcium channel blockade since platelets lack voltage operated channels. Dopropidil also reduces fatty streak formation in the aorta of cholesterol fed rabbits, an action which may be related to the demonstrated antioxidant properties of this compound. Long-term toxicity studies in rats and dogs showed only mild toxic signs, notably a decrease in food consumption, slight sedation, and some vomiting in the latter species. Dopropidil had been in phase II clinical trials for the treatment of angina pectoris and arrhythmias. However, these studies were discontinued.

Befiperide, a non-dopaminolytic serotonin 1 receptor agonist, was a neuroleptic for psychotic disorders. However, further studies for this drug were discontinued.

Clobenzepam (tarpane) is a drug exhibiting antihistaminic properties.

Clobenoside is a vasoprotective and anti-inflammatory agent. The drug was used for the topical treatment of chronic venous insufficiency and post-thrombotic syndrome. Clobenoside was also reportedly effective in treating traumatic edema through its inhibitory effects on histamine and/or kinins.

There is no information about biological and medical application of dorastine . It’s known, that compound possesses antihistamine properties and can be obtained from 4-chloroaniline.

Besonprodil (also known as CI-1041), an NR2B subunit specific NMDA receptor antagonist, has been developed for the treatment of certain inflammatory and neuropathic pain, however, these studies were discontinued. Besides, besonprodil was investigated as a supplemental medication for Parkinson's disease. Experiments on animals have shown that this drug could be effective in counteracting the dyskinesia associated with long-term treatment with levodopa and related drugs.